The User Register in GMAC IP is used to select interface type. When with GE feature, it is used to select interface between RGMII and GMII. If without GE feature, it is used to select interface between MII and RMII.
Signed-off-by: Bo Shen voice.shen@atmel.com --- Changes in v3: None Changes in v2: None
drivers/net/macb.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index 375c8a4..6d48252 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -565,7 +565,13 @@ static int macb_init(struct eth_device *netdev, bd_t *bd) macb_writel(macb, TBQP, macb->tx_ring_dma);
if (macb_is_gem(macb)) { -#ifdef CONFIG_RGMII + /* + * When the GMAC IP with GE feature, this bit is used to + * select interface between RGMII and GMII. + * When the GMAC IP without GE feature, this bit is used + * to select interface between RMII and MII. + */ +#if defined(CONFIG_RGMII) || defined(CONFIG_RMII) gem_writel(macb, UR, GEM_BIT(RGMII)); #else gem_writel(macb, UR, 0);